HeySis Terms of Use

Effective date: July 4, 2026 · Contact: wantbefree48@gmail.com

These Terms of Use (the "Terms") are a binding agreement between you and the HeySis team ("HeySis", "we") governing your use of the HeySis mobile application and this website (together, the "App"). By downloading or using the App you agree to these Terms and to the Privacy Policy. If you do not agree, please do not use the App.

1. What HeySis is — and what it is not

HeySis is a cycle-tracking and educational wellness app with an AI companion ("Mia"). The App helps you log your cycle, mood and symptoms, see estimates of upcoming cycle events, chat with Mia and read short educational content.

HeySis is not a medical device, and nothing in the App is medical advice, diagnosis or treatment. The App's content and Mia's answers are provided for general informational and educational purposes only. Always seek the advice of a qualified healthcare professional with any questions regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you read in HeySis. If you think you may have a medical emergency, call your local emergency number immediately.

2. Predictions are estimates — not contraception

Cycle, ovulation and fertile-window predictions are statistical estimates based on the data you enter. Bodies vary, cycles vary, and predictions can be wrong. Predictions must not be used as a contraceptive method, to prevent pregnancy, or as the sole basis for planning one. If pregnancy would be a problem for you, use a reliable method of contraception chosen with your doctor.

3. Eligibility

You must be at least 13 years old to use the App, or older where your local law sets a higher minimum age or requires parental consent. By using the App you confirm that you meet this requirement. The App is intended for personal, non-commercial use.

4. No account required; anonymous sessions

HeySis does not require you to create an account. Optional online features (cloud sync, the sharing circle) use an anonymous session that is not linked to your email or phone number. You can delete this session and all associated data at any time in the App — see the Privacy Policy ("Deleting your account and data") and the deletion guide.

5. Licence

We grant you a personal, non-exclusive, non-transferable, revocable licence to install and use the App on Apple-branded devices that you own or control, as permitted by the App Store Terms of Service and the Usage Rules set out therein. This licence is for your private use only; it does not allow you to copy, modify, distribute, sell, rent, sublicense, reverse-engineer or decompile the App, except to the extent the law expressly permits despite this limitation.

6. Your content and data

Everything you enter in the App — your diary, notes and messages — remains yours. We claim no ownership of it. You grant us only the narrow technical permission needed to operate the features you actually turn on (for example storing a synced copy of your diary, or relaying a chat message to generate Mia's reply), as described in the Privacy Policy. If you send us feedback or suggestions, we may use them to improve the App without obligation to you.

7. Acceptable use

You agree not to:

• use the App for any unlawful purpose or in violation of these Terms;
• attempt to gain unauthorized access to our systems or other users' data, probe or disrupt our backend, or circumvent security or rate limits;
• upload malicious code or interfere with the App's operation;
• use the AI assistant to generate or spread unlawful, harmful, harassing or deliberately misleading content, or attempt to extract other people's personal data from it;
• misrepresent the App's output as professional medical advice when sharing it;
• resell, scrape or bulk-extract the App's content or services.

We may suspend or terminate access that endangers the service or other users (see section 13).

8. AI-generated content

Mia's answers are generated by artificial intelligence. They may be incomplete, outdated or simply wrong, and they are not reviewed by a medical professional before you see them. Mia has safety rules — she does not diagnose and she encourages seeing a doctor when something deserves attention — but no AI safety system is perfect. Use your own judgement, verify important information with qualified professionals, and treat Mia's suggestion to see a doctor as precautionary care, not a diagnosis. You are responsible for how you use AI-generated content.

9. Subscriptions and purchases

HeySis offers a HeySis Premium auto-renewable subscription that unlocks all Premium features and a substantially higher Mia message allowance. It is available as a monthly or yearly plan, and new subscribers start with a 14-day free trial.

• Billing. Payment is charged to your Apple Account at confirmation of purchase. Prices are shown in the app before you subscribe and may vary by region.
• Free trial. If you start a free trial and do not cancel at least 24 hours before it ends, it converts to a paid subscription and your Apple Account is charged. Any unused portion of a free trial is forfeited when you buy a subscription.
• Auto-renewal. The subscription renews automatically for the same period unless you turn off auto-renew at least 24 hours before the current period ends. Your Apple Account is charged for renewal within 24 hours before the period ends.
• Managing and cancelling. You can manage or cancel your subscription any time in your Apple Account settings (Settings → your name → Subscriptions). Cancelling stops future renewals; the current paid period continues until it ends.
• Refunds are handled by Apple under Apple's terms; we cannot issue them directly.

Users who had the app before Premium was introduced keep their existing access at no charge.

10. Intellectual property

The App, its design, texts, illustrations, the Mia character, trademarks and all related content (except your content) are owned by the HeySis team or its licensors and are protected by intellectual-property laws. Except for the licence in section 5, no rights are granted to you.

11. Third-party services

The App relies on third-party services described in the Privacy Policy — for example Apple Health (optional), our hosting provider and an AI model provider. Their availability is outside our control, their own terms may apply, and we are not responsible for their acts or omissions. Educational content in the App may reference or link to external medical sources; we do not control and are not responsible for external sites.

12. Changes to the App and to these Terms

The App is under active development: we may add, change or remove features at any time, and we do not promise that any particular feature will remain available. We may update these Terms; material changes will be reflected by a new effective date on this page and, where appropriate, announced in the App. Continuing to use the App after a change means you accept the updated Terms; if you do not agree, stop using the App and delete your data as described in the Privacy Policy.

13. Termination

You can stop using the App at any time; deleting your data and removing the App ends this agreement. We may suspend or terminate your access to the online features (or, where required, the App) if you materially breach these Terms, if we are legally required to, or if we discontinue the service — with reasonable notice where practicable. Sections that by their nature should survive termination (including sections 6, 10 and 14–17) survive.

14. Disclaimer of warranties

The App is provided "as is" and "as available", without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, non-infringement, accuracy of predictions or uninterrupted availability. Some jurisdictions do not allow certain warranty exclusions; in that case the minimum warranties required by law apply.

15. Limitation of liability

To the maximum extent permitted by applicable law, the HeySis team shall not be liable for any indirect, incidental, special, consequential or punitive damages, loss of profits, loss of data or cost of substitute services arising out of or related to your use of (or inability to use) the App. To the same maximum extent, our total aggregate liability for all claims relating to the App shall not exceed the greater of the amount you paid us in the twelve months before the claim or fifty (50) US dollars.

Nothing in these Terms excludes or limits liability that cannot be excluded under applicable law — including liability for intent or gross negligence, for injury to life, body or health, or statutory consumer rights in your country of residence. If you are a consumer in the EU/EEA or UK, you retain all mandatory consumer protections of your home country.

16. Indemnity

To the extent permitted by the law of your country of residence, you agree to indemnify the HeySis team against third-party claims arising from your breach of these Terms or your unlawful use of the App. This clause does not apply where prohibited by consumer-protection law.

17. Governing law and disputes

These Terms are governed by the law applicable in your country of habitual residence, and disputes may be brought before the courts competent there. Mandatory consumer-protection rules of your home country always remain unaffected. We encourage you to contact us first at wantbefree48@gmail.com — most issues can be resolved quickly and informally.

18. Apple App Store terms

These Terms are between you and the HeySis team, not Apple. The following terms apply because the App is distributed through Apple's App Store:

• Acknowledgement. Apple is not responsible for the App or its content, and has no obligation to furnish maintenance or support for it.
• Warranty. In the event of any failure of the App to conform to an applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any); to the maximum extent permitted by law, Apple has no other warranty obligation with respect to the App.
• Product claims. Any claims relating to the App — including product liability, legal or regulatory non-conformance, and consumer-protection claims — are our responsibility, not Apple's.
• Intellectual property. In case of a third-party claim that the App infringes intellectual-property rights, we — not Apple — are responsible for the investigation, defence, settlement and discharge of such claim.
• Legal compliance. You represent that you are not located in a country subject to a U.S. Government embargo or designated as "terrorist supporting", and that you are not on any U.S. Government list of prohibited or restricted parties.
• Third-party beneficiary. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.
• Contact. Questions, complaints or claims: wantbefree48@gmail.com.

19. Miscellaneous

If any provision of these Terms is held invalid, the remaining provisions remain in full force, and the invalid provision is replaced by a valid one that best reflects its intent. Our failure to enforce a provision is not a waiver. You may not assign these Terms; we may assign them to a successor of the HeySis project with notice to you. These Terms, together with the Privacy Policy, are the entire agreement between you and us regarding the App.

20. Prevailing language

These Terms are published in English and Russian. If the versions ever disagree, the English version prevails.

21. Contact

Questions about these Terms: wantbefree48@gmail.com.